APA Style

HANNA, G., VILLIERS, M, D. (2012). Proof and Proving in Mathematics Education; The 19th ICMI (International Commission on Mathematical Instruction) Study . Amsterdam, Netherlands: Springer International Publishing.

MLA Style

HANNA, Gila., VILLIERS, Michael, De. "Proof and Proving in Mathematics Education; The 19th ICMI (International Commission on Mathematical Instruction) Study". Amsterdam, Netherlands: Springer International Publishing, 2012. Text.